CocoRoboDesktop/pdf1.js/node_modules/systemjs-plugin-babel/babel-helpers/asyncIterator.js

export default (function (iterable) {
  if (typeof Symbol === "function") {
    if (Symbol.asyncIterator) {
      var method = iterable[Symbol.asyncIterator];
      if (method != null) return method.call(iterable);
    }

    if (Symbol.iterator) {
      return iterable[Symbol.iterator]();
    }
  }

  throw new TypeError("Object is not async iterable");
});